Change the way strums work with Note Hits. Reorganize classes in funkin.play.notes and Helper Functions.

[PurSnake]

Changes

• A lot of classes infunkin.play.notes got reorganized.

• Strumline now have targetCharacter (to determine what character uses this strum) and downScroll (self explanatory) variables.

• Some classes in funkin.play.notes now have _parentStrum.

• Rewrites how BaseCharacter handle NoteScriptEvent.

• NoteSprite now have targetCharacter , thats override Strumline targetCharacter , and it can be set manually via scripts.
  It should work with NoteKinds, i guess

• BaseCharacter got new Helper Functions (Especially setShader, because its now used for AnimateAtlasCharacter and can be overriden for complex characters, like Nene)

Also a lot of scripts got cleaned up. (No more PlayState.instance.currentStage code in STAGE scripts, duh -_-).

Its hard to write EVERY change in this pr, so check code and write your opinions and what to change.

(the hell is that .github files)

[AbnormalPoof]

nearly 2000 changes...

[PurSnake]

I wouldn't say it's a breaking change, it still works fine with the previous scripts. (Tested with Itch.io 0.6.4 release scripts)

[Starexify]

Can this PR also add better support for mods that add extra or less keys/directions to the notes ?
For example: KEY_COUNT ,SPLASHES_CAP shouldn't be final, the hold covers shouldn't be limited to 4, and maybe aswell be a variable from the strumline instead, like the KEY_COUNT.

Only if possible aswell for these functions from SongData which are forced to use 4, which mods can't modify most classes that use them:

[Lasercar]

I wouldn't say it's a breaking change, it still works fine with the previous scripts. (Tested with Itch.io 0.6.4 release scripts)

It's still a breaking change due to the large amount of changes. I wouldn't be surprised if a bug was found among all those changes.

[PurSnake]

It's still a breaking change due to the large amount of changes. I wouldn't be surprised if a bug was found among all those > changes.

Ehh, true

[PurSnake]

oh god
conflicts

[PurSnake]

TODO: REDO